<!DOCTYPE html>
<html>
  <head>
    <title>Bootstrap 101 Template</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!-- Bootstrap -->
    <link rel="stylesheet" href="http://cdn.bootcss.com/twitter-bootstrap/3.0.3/css/bootstrap.min.css">

    <!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
        <script src="http://cdn.bootcss.com/html5shiv/3.7.0/html5shiv.min.js"></script>
        <script src="http://cdn.bootcss.com/respond.js/1.3.0/respond.min.js"></script>
    <![endif]-->
  </head>
  <body>
    <h1>Hello, world!</h1>


    


    <script src="http://code.jquery.com/jquery.js"></script>
    <!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
    <script src="http://cdn.bootcss.com/jquery/1.10.2/jquery.min.js"></script>
    <!-- Include all compiled plugins (below), or include individual files as needed -->
    <script src="http://cdn.bootcss.com/twitter-bootstrap/3.0.3/js/bootstrap.min.js"></script>
  </body>
</html>

<!-- cdn失败加载本地类库 -->
<script type="text/javascript">
    if (typeof jQuery == 'undefined') {
        document.write(unescape("%3Cscript src='js/jquery/jquery-1.7.2.min.js' type='text/javascript'%3E%3C/script%3E"));
    };
    if (typeof JSON == 'undefined') {
        document.write(unescape("%3Cscript src='js/json/json2.min.js' type='text/javascript'%3E%3C/script%3E"));
    };
</script>